Biology Past Questions

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Past Questions

5,032 questions
Question 1 of 20 5,032 total questions
Question 251
waec 2022

The property of clayey soil that prevents it from supporting thick vegetation is its?

Acomposition of chemically weathered granite rocks
Binability to retain much water
Ctendency of becoming waterlogged
Dporosity and low water retention ability
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Question 252
waec 2022

Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question.

After a reaction between protease J and the food substance, the end product would be 

Afatty acids
Bglucose
Camino acids
Dwater
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Question 253
waec 2022

Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question.

Protease J would react with the particular illustrated substance because enzymes? 

Aare denatured at a high frequency  
Bare specific in their action  
Cremain unchanged after a reaction
Dspeed 
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Question 254
waec 2022

The major source of vitamin A are ?

Aegg yolk, carrot and palm oil
Bmango, pawpaw,and eggs
Csorghum,soya bean and liver
Drice,bran,green vegetables and milk
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Question 255
waec 2022

An evidence of the occurrence of photosynthesis in an experiment is the?

Arelease of carbon (IV) oxide
Brelease of oxygen
Cformation of water molecules
Dformation and release of fructose
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Question 256
waec 2022

 In which of the following structures is simple sugar produced?

AVacuole
BCytoplasm
CChloroplast
DCell wall
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Question 257
waec 2022

The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.

If the number of chromosomes in the skin cells of mammals is 46, how many chromosomes would be found in P and Q respectively?

A23 and 23
B23 and 46
C46 and 23
D46 and 46.
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Question 258
waec 2022

The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.

Which of the following statements about P and Q is correct?

ABoth cells are structures for asexual reproduction
BBoth cells normally belong to the same individual
CBoth cells are found in plants
DThe union of both cells gives rise to a new mammal
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Question 259
waec 2022

The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.

Which parts of P and Q fuse to complete the biological process?

AIII and I
BIV and I
CIII and II
DIV and II
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Question 260
waec 2022

The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question.

Which of the parts are correctly grouped?

A(Inner ear I, IV) (Middle ear III) (Outer ear II)
B(Inner ear III) (Middle ear II, IV) (Outer ear I)
C(Inner ear III) (Middle ear II) (Outer ear III,IV)
D(Inner ear II) (Middle ear I, III) (Outer ear IV)
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Question 261
waec 2022

The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question.

The parts labelled I are the?

Asemi circular canals
Bossicles
Ccochlea
Dexternal auditory meatus
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Question 262
waec 2022

The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question.

The middle ear is connected to the pharynx by the part labelled

AI
BII
CIII
DIV
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Question 263
waec 2022

 The table above shows the effect of hormones I,II,III and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. study it and answer this question. 

The hormone responsible for anxiety is?

AI
BII
CIII
DIV
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Question 264
waec 2022

The table above shows the effect of hormones I,II,III and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. study it and answer this question. 
 

Which of the following hormones are l, II, Ill and IV respectively?

AADH, Glucagon,
Oestrogen, Adrenaline
BAdrenaline,
Glucagon, Oestrogen, ADH
CGlucagon,ADH, Oestrogen, Adrenaline
DAdrenaline,
ADH, Oestrogen, Glucagon
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Question 265
waec 2022

Use the following processes to answer this question.
I-Ribs move upward and outward

II- Diaphragm relaxes

IIl-Volume of thorax increases

IV-Air is forced out of the lungs

which of the following processes is a direct result of contraction of the intercostal muscles?

AI
BII
CIV
D
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Question 266
waec 2022

Use the following processes to answer this question.
I-Ribs move upward and outward

II- Diaphragm relaxes

IIl-Volume of thorax increases

IV-Air is forced out of the lungs

 Which of the processes take place during inspiration?

AI and III only
BII and III only
CII and III only
DIII and IV only
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Question 267
waec 2022

Which of the following blood components has the greatest affinity for oxygen and carbon (IV) oxide? 

ALymphocyte
BErythrocyte
CBlood plasma
DThrombocyte
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Question 268
waec 2022

The total number of caudal vertebrae in animals X and Y is 4 and 27 respectively. The animals are likely to be.

Afish and human
Btoad and rat
Ctoad and fish
Dhumans and rat
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Question 269
waec 2022

The region of a plant stem in which cells divide to increase its diameter is

Acambium
Bphloem
Cxylem
Dcollenchyma
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Question 270
waec 2022

The process that brings about the shrinking of a spirogyra cell when placed in a strong solution is ?

Aosmosis
Bautolysis
Cplasmolysis
Ddiffusion
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